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27-02-2026 17:51

Parasite de Evernia Prunastri
Michel Hairaud Michel Hairaud

Bonjour, Quelqu'un peut il me donner un conseil p

27-02-2026 16:17

Sydowiella or Melanconis teleomorph on Betula
Mathias Hass Mathias Hass

Hi, Found this on Betula, rather fresh fallen twi

27-02-2026 12:56

Conidiomata on Pinus sylvestris cones
Åge Oterhals

Found on fallen cones of Pinus sylvestris in midle

27-02-2026 11:21

Nemania diffusa complex
Yannick Mourgues Yannick Mourgues

Hi to all. Here is a specie that can may be relat

26-02-2026 22:06

Geoscypha
Malcolm Greaves Malcolm Greaves

Can someone explain the features that split Geoscy

26-02-2026 15:00

En madera sin determinar
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, recolectada

24-02-2026 00:21

Pezizale
Benoît Segerer

Hello,I'm new to this forum, I hope I won't be irr

24-02-2026 11:01

Anamorph on Tilia
Gernot Friebes

Hi,found on a branch of Tilia, with conidia measur

23-02-2026 11:22

lasiosphaerioid on pine cone with small, slender spores - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10584971

29-11-2024 21:47

Calycina heterospora
Yanick BOULANGER

BonjourJ'avais un deuxième échantillon moins mat

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Geopora
Malcolm Greaves, 07-10-2019 16:19
Malcolm Greaves
Hello

Is anyone able to tell from these photos if this is G arenicola or some other species of Geopora. The part submerged cup was in damp soil. The spores were on average 24x13 with two large guttules. Paraphyses slightly swollen at the tip.

Thanks

Mal
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Josep Torres, 08-10-2019 22:39
Josep Torres
Re : Geopora
Hola Mal, creo que la Geopora arenicola debería presentar esporas de mayor tamaño, con un tamaño esporal parecido tengo un estudio que determiné que se trataba de Geopora cervina, en mi caso las esporas daban unas medidas de: 
(21.1) 22.6 - 25.2 (28.9) × (10.8) 11.7 - 12.9 (13.4) µm
Q = (1.8) 1.9 - 2.1 (2.2) ; N = 20
Me = 23.9 × 12.2 µm ; Qe = 2
Aunque de media las medidas parecen encajar, no me cuadra la morfología de las esporas de tu trabajo.
Te dejo una imagen de mi estudio de la supuesta Geopora cervina.
Saludos cordiales.

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Malcolm Greaves, 09-10-2019 01:13
Malcolm Greaves
Re : Geopora
hola Josep

I will try and get more spores and get a better average.

The sizes do seem to vary between the different keys I have.

Mal
Malcolm Greaves, 09-10-2019 17:31
Malcolm Greaves
Re : Geopora
Hola Josep

From a spore drop I ended up with 23.06-25.38 x 12.44-13.97 and an average 24.23 x 13.38. Q value 1.81. These figures don't fit with G cervina or G arenicola in Ascomiceti d'Italia. Could be either species in Spooners Geopora in the UK. Nordic Macromycetes has the width as 10.5-13 for G cervina and 10-13.5 for G arenicola.

Very close but unless there is a new study or key out there G arenicola does look the closest but only by a very small margin.

Thanks for your input.

Mal